Thank you so much for all your support every one.
All is coming back to normal now, with bigger poops at last, instead of titchy "stasis"poops, & he has just made a good effort with his hay.
He was very woozy, & got very cold in the short journey home. He had a bit of "the shakes", which has worn off. (Muscle tremors) I don't know whether this is anaesthetic or whether buns actually shiver with cold.
It's better for us psychologically if he comes home woozy. He just gradually "comes round" in his own environment & we carry on. If he's fully alert, there is a period of estrangement, & he seems so small & alone in a "hostile" world, as if his trust in me has been breached. Although it's more likely to be a rabbit "bonding" issue. I usually speak of his "strops", but the truth is he's more expressive of enjoyment & excitement. I can't imagine a bun who purrs more easily.
I think I've answered my own question. I feel that we took it to the limit before a dental this time. I'm so thankful for Great Western Referrals, especially for Marie, & the receptionists, who always manage to fit us in somehow, when I can only give 4 days notice.
I've been quietly thinking of those who have contributed to this thread, most with dental/stasis buns yourselves. There's Ginger, Eric, Lola, possibly Bisc. & Alvin who's a law unto himself. We've all been through the stress with the first problems, the worry of recognizing recurrence early enough, (each bun a unique individual,) the sleepless nights bunny nursing, & we've all struggled, & finally succeeded in finding good rabbit vets we really can trust.
I wish you all a wonderful Christmas with your bunnies.